package com.sky.mapper;

import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Update;

import java.util.List;

@Mapper
public interface ShoppingCartMapper {

    /**
     * 查看购物车
     *
     * @param shoppingCart
     * @return
     */
    List<ShoppingCart> list(ShoppingCart shoppingCart);

    /**
     * 添加购物车
     *
     * @param shoppingCart
     */
    @Insert("insert into shopping_cart (name, image, user_id, dish_id, setmeal_id, dish_flavor, number, amount, create_time) " +
            "VALUES (#{name},#{image},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{number},#{amount},#{createTime})")
    void insert(ShoppingCart shoppingCart);

    /**
     * 更新购物车，数量的删减
     * @param shoppingCart
     */

    void update(ShoppingCart shoppingCart);

    /**
     * 清空购物车
     * @return
     */
    @Delete("delete from shopping_cart where user_id = #{userId}")
    void cleanShoppingCartByUserId(Long userId);

    @Delete("delete from shopping_cart where id = #{id}")
    void deleteIfNumZero(Long id);
}
